Vernor Vinge Smart Contact Lens On Wired

A tiny disk sat on the tip of her middle finger. It was the size and shape of the contact lenses he had known. He hadn't expected more, but... he bent closed and looked. After a moment, he realized that it was not quite a clear lens. Speckles of colored brightness swirled and gathered in it.
(Read more about Vernor Vinge's smart contact lens)

It turns out that somebody at Wired has come up with the same idea - and produced a cool graphic. Check it out.